<template>
  <div class="app-container">
    <el-card class="filter-container" shadow="never">
      <div>
        <i class="el-icon-search"></i>
        <span>筛选搜索</span>
        <el-button style="float:right" type="primary" @click="handleSearchList()" size="small">查询搜索</el-button>
        <el-button
          style="float:right;margin-right: 15px"
          @click="handleResetSearch()"
          size="small"
        >重置</el-button>
      </div>
      <div style="margin-top: 15px">
        <el-form :inline="true" :model="listQuery" size="small" label-width="140px">
          <el-form-item label="专题名称：">
            <el-input v-model="listQuery.subjectName" class="input-width" placeholder="专题名称"></el-input>
          </el-form-item>
          <el-form-item label="推荐状态：">
            <el-select
              v-model="listQuery.recommendStatus"
              placeholder="全部"
              clearable
              class="input-width"
            >
              <el-option
                v-for="item in recommendOptions"
                :key="item.value"
                :label="item.label"
                :value="item.value"
              ></el-option>
            </el-select>
          </el-form-item>
        </el-form>
      </div>
    </el-card>
    <el-card class="operate-container" shadow="never">
      <i class="el-icon-tickets"></i>
      <span>数据列表</span>
      <el-button size="mini" class="btn-add" @click="handleSelectSubject()">选择专题</el-button>
    </el-card>
    <div class="table-container">
      <el-table
        ref="newSubjectTable"
        :data="list"
        style="width: 100%;"
        @selection-change="handleSelectionChange"
        v-loading="listLoading"
        border
      >
        <el-table-column type="selection" width="60" align="center"></el-table-column>
        <el-table-column label="编号" width="120" align="center">
          <template slot-scope="scope">{{scope.row.id}}</template>
        </el-table-column>
        <el-table-column label="专题名称" align="center">
          <template slot-scope="scope">{{scope.row.subjectName}}</template>
        </el-table-column>
        <el-table-column label="是否推荐" width="200" align="center">
          <template slot-scope="scope">
            <el-switch
              @change="handleRecommendStatusStatusChange(scope.$index, scope.row)"
              :active-value="1"
              :inactive-value="0"
              v-model="scope.row.recommendStatus"
            ></el-switch>
          </template>
        </el-table-column>
        <el-table-column label="排序" width="160" align="center">
          <template slot-scope="scope">{{scope.row.sort}}</template>
        </el-table-column>
        <el-table-column label="状态" width="160" align="center">
          <template slot-scope="scope">{{scope.row.recommendStatus | formatRecommendStatus}}</template>
        </el-table-column>
        <el-table-column label="操作" width="180" align="center">
          <template slot-scope="scope">
            <el-button size="mini" type="text" @click="handleEditSort(scope.$index, scope.row)">设置排序</el-button>
            <el-button size="mini" type="text" @click="handleDelete(scope.$index, scope.row)">删除</el-button>
          </template>
        </el-table-column>
      </el-table>
    </div>
    <div class="batch-operate-container">
      <el-select size="small" v-model="operateType" placeholder="批量操作">
        <el-option
          v-for="item in operates"
          :key="item.value"
          :label="item.label"
          :value="item.value"
        ></el-option>
      </el-select>
      <el-button
        style="margin-left: 20px"
        class="search-button"
        @click="handleBatchOperate()"
        type="primary"
        size="small"
      >确定</el-button>
    </div>
    <div class="pagination-container">
      <el-pagination
        background
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        layout="total, sizes,prev, pager, next,jumper"
        :page-size="listQuery.pageSize"
        :page-sizes="[5,10,15]"
        :current-page.sync="listQuery.pageNum"
        :total="total"
      ></el-pagination>
    </div>
    <el-dialog title="选择专题" :visible.sync="selectDialogVisible" width="50%">
      <el-input
        v-model="dialogData.listQuery.keyword"
        style="width: 250px;margin-bottom: 20px"
        size="small"
        placeholder="专题名称搜索"
      >
        <el-button slot="append" icon="el-icon-search" @click="handleSelectSearch()"></el-button>
      </el-input>
      <el-table :data="dialogData.list" @selection-change="handleDialogSelectionChange" border>
        <el-table-column type="selection" width="60" align="center"></el-table-column>
        <el-table-column label="专题名称" align="center">
          <template slot-scope="scope">{{scope.row.title}}</template>
        </el-table-column>
        <el-table-column label="所属分类" width="160" align="center">
          <template slot-scope="scope">{{scope.row.categoryName}}</template>
        </el-table-column>
        <el-table-column label="添加时间" width="160" align="center">
          <template slot-scope="scope">{{scope.row.createTime | formatTime}}</template>
        </el-table-column>
      </el-table>
      <div class="pagination-container">
        <el-pagination
          background
          @size-change="handleDialogSizeChange"
          @current-change="handleDialogCurrentChange"
          layout="prev, pager, next"
          :current-page.sync="dialogData.listQuery.pageNum"
          :page-size="dialogData.listQuery.pageSize"
          :page-sizes="[5,10,15]"
          :total="dialogData.total"
        ></el-pagination>
      </div>
      <div style="clear: both;"></div>
      <div slot="footer">
        <el-button size="small" @click="selectDialogVisible = false">取 消</el-button>
        <el-button size="small" type="primary" @click="handleSelectDialogConfirm()">确 定</el-button>
      </div>
    </el-dialog>
    <el-dialog title="设置排序" :visible.sync="sortDialogVisible" width="40%">
      <el-form :model="sortDialogData" label-width="150px">
        <el-form-item label="排序：">
          <el-input v-model="sortDialogData.sort" style="width: 200px"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer">
        <el-button @click="sortDialogVisible = false" size="small">取 消</el-button>
        <el-button type="primary" @click="handleUpdateSort" size="small">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>
<script>
import {
  fetchList,
  updateRecommendStatus,
  deleteHomeSubject,
  createHomeSubject,
  updateHomeSubjectSort
} from "@/api/homeSubject";
import { fetchList as fetchSubjectList } from "@/api/subject";
import { formatDate } from "@/utils/date";

const defaultListQuery = {
  pageNum: 1,
  pageSize: 5,
  subjectName: null,
  recommendStatus: null
};
const defaultRecommendOptions = [
  {
    label: "未推荐",
    value: 0
  },
  {
    label: "推荐中",
    value: 1
  }
];
export default {
  name: "homeSubjectList",
  data() {
    return {
      listQuery: Object.assign({}, defaultListQuery),
      recommendOptions: Object.assign({}, defaultRecommendOptions),
      list: null,
      total: null,
      listLoading: false,
      multipleSelection: [],
      operates: [
        {
          label: "设为推荐",
          value: 0
        },
        {
          label: "取消推荐",
          value: 1
        },
        {
          label: "删除",
          value: 2
        }
      ],
      operateType: null,
      selectDialogVisible: false,
      dialogData: {
        list: null,
        total: null,
        multipleSelection: [],
        listQuery: {
          keyword: null,
          pageNum: 1,
          pageSize: 5
        }
      },
      sortDialogVisible: false,
      sortDialogData: { sort: 0, id: null }
    };
  },
  created() {
    this.getList();
  },
  filters: {
    formatRecommendStatus(status) {
      if (status === 1) {
        return "推荐中";
      } else {
        return "未推荐";
      }
    },
    formatTime(time) {
      if (time == null || time === "") {
        return "";
      }
      let date = new Date(time);
      return formatDate(date, "yyyy-MM-dd hh:mm:ss");
    }
  },
  methods: {
    handleResetSearch() {
      this.listQuery = Object.assign({}, defaultListQuery);
    },
    handleSearchList() {
      this.listQuery.pageNum = 1;
      this.getList();
    },
    handleSelectionChange(val) {
      this.multipleSelection = val;
    },
    handleSizeChange(val) {
      this.listQuery.pageNum = 1;
      this.listQuery.pageSize = val;
      this.getList();
    },
    handleCurrentChange(val) {
      this.listQuery.pageNum = val;
      this.getList();
    },
    handleRecommendStatusStatusChange(index, row) {
      this.updateRecommendStatusStatus(row.id, row.recommendStatus);
    },
    handleDelete(index, row) {
      this.deleteSubject(row.id);
    },
    handleBatchOperate() {
      if (this.multipleSelection < 1) {
        this.$message({
          message: "请选择一条记录",
          type: "warning",
          duration: 1000
        });
        return;
      }
      let ids = [];
      for (let i = 0; i < this.multipleSelection.length; i++) {
        ids.push(this.multipleSelection[i].id);
      }
      if (this.operateType === 0) {
        //设为推荐
        this.updateRecommendStatusStatus(ids, 1);
      } else if (this.operateType === 1) {
        //取消推荐
        this.updateRecommendStatusStatus(ids, 0);
      } else if (this.operateType === 2) {
        //删除
        this.deleteSubject(ids);
      } else {
        this.$message({
          message: "请选择批量操作类型",
          type: "warning",
          duration: 1000
        });
      }
    },
    handleSelectSubject() {
      this.selectDialogVisible = true;
      this.dialogData.listQuery.keyword = null;
      this.getDialogList();
    },
    handleSelectSearch() {
      this.getDialogList();
    },
    handleDialogSizeChange(val) {
      this.dialogData.listQuery.pageNum = 1;
      this.dialogData.listQuery.pageSize = val;
      this.getDialogList();
    },
    handleDialogCurrentChange(val) {
      this.dialogData.listQuery.pageNum = val;
      this.getDialogList();
    },
    handleDialogSelectionChange(val) {
      this.dialogData.multipleSelection = val;
    },
    handleSelectDialogConfirm() {
      if (this.dialogData.multipleSelection < 1) {
        this.$message({
          message: "请选择一条记录",
          type: "warning",
          duration: 1000
        });
        return;
      }
      let selectSubjects = [];
      for (let i = 0; i < this.dialogData.multipleSelection.length; i++) {
        selectSubjects.push({
          subjectId: this.dialogData.multipleSelection[i].id,
          subjectName: this.dialogData.multipleSelection[i].title
        });
      }
      this.$confirm("使用要进行添加操作?", "提示", {
        confirmButtonText: "确定",
        cancelButtonText: "取消",
        type: "warning"
      }).then(() => {
        createHomeSubject(selectSubjects).then(response => {
          this.selectDialogVisible = false;
          this.dialogData.multipleSelection = [];
          this.getList();
          this.$message({
            type: "success",
            message: "添加成功!"
          });
        });
      });
    },
    handleEditSort(index, row) {
      this.sortDialogVisible = true;
      this.sortDialogData.sort = row.sort;
      this.sortDialogData.id = row.id;
    },
    handleUpdateSort() {
      this.$confirm("是否要修改排序?", "提示", {
        confirmButtonText: "确定",
        cancelButtonText: "取消",
        type: "warning"
      }).then(() => {
        updateHomeSubjectSort(this.sortDialogData).then(response => {
          this.sortDialogVisible = false;
          this.getList();
          this.$message({
            type: "success",
            message: "删除成功!"
          });
        });
      });
    },
    getList() {
      this.listLoading = true;
      fetchList(this.listQuery).then(response => {
        this.listLoading = false;
        this.list = response.data.list;
        this.total = response.data.total;
      });
    },
    updateRecommendStatusStatus(ids, status) {
      this.$confirm("是否要修改推荐状态?", "提示", {
        confirmButtonText: "确定",
        cancelButtonText: "取消",
        type: "warning"
      })
        .then(() => {
          let params = new URLSearchParams();
          params.append("ids", ids);
          params.append("recommendStatus", status);
          updateRecommendStatus(params).then(response => {
            this.getList();
            this.$message({
              type: "success",
              message: "修改成功!"
            });
          });
        })
        .catch(() => {
          this.$message({
            type: "success",
            message: "已取消操作!"
          });
          this.getList();
        });
    },
    deleteSubject(ids) {
      this.$confirm("是否要删除该推荐?", "提示", {
        confirmButtonText: "确定",
        cancelButtonText: "取消",
        type: "warning"
      }).then(() => {
        let params = new URLSearchParams();
        params.append("ids", ids);
        deleteHomeSubject(params).then(response => {
          this.getList();
          this.$message({
            type: "success",
            message: "删除成功!"
          });
        });
      });
    },
    getDialogList() {
      fetchSubjectList(this.dialogData.listQuery).then(response => {
        this.dialogData.list = response.data.list;
        this.dialogData.total = response.data.total;
      });
    }
  }
};
</script>
<style></style>
